1 Reply

By my estimate, the minimum is about two hours. Many of us will spend longer hours because we are inspired to improvise, or because we want to comment more on the forums, or because math problems take longer - especially the "young adult" level. In the past courses, some people chose to spend longer time working with photos, or searching for similar ideas online. All the course assignments are open, and that includes choices about the time spent. I think the all-time record for my class was 30 hours on one assignment, when a participant decided to make a beautiful, well-researched Prezi about his topic.